| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that water drops do not drop, become irregular, or completely stop in a bad case, due to water scale and dust etc. by long term use, and sound is unstable and small with poor reproducibility, in a conventional portable sounding jar by water drops. <P>SOLUTION: Calm and loud sound is generated by stabilizing flow of water and making large size water drop, by combining an upper large water tank and a lower small tank. <P>COPYRIGHT: (C)2011,JPO&INPIT |
